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    <title>Document</title>
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    <script>
        //构造函数的问题
        function Star(uname, age) {
            this.uname = uname;
            this.age = age;
        }
        Star.prototype = {
            constructor: Star,
            sing: function () {
                console.log("我会唱歌");
            },
            moive: function () {
                console.log("我会演电影");
            }
        }
        var ldh = new Star("刘德华", 18);
        var zxy = new Star("张学友", 19);
        console.log(Star.prototype);
        console.log(ldh.__proto__);
        console.log(Star.prototype.constructor);
        console.log(ldh.__proto__.constructor);
    </script>
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